Just basic shh information.
Secure SHell allows a user to securely login to a remote machine from a terminal and execute commands as if sitting at the rhost's keyboard.
To login to a remote machine:
$ssh user@rhost
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*Sources of info:
$man ssh
"Setting Up SSH Keys"
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*More secure
The connection data is encrypted so ssh can be used over an insecure network (read the internet).